Integral non-metallic cartridge-case



H ERNST INTEGRAL NON-METALLIC CARTRIDGE CASE.

APPLICATION FILED MAR 7, 191,9.

Patented Jan. 11, 1921 /I TY'ORNE V UNITED STATES HANS ERNST, or ALTON,ILLINOIS.

IDTTEGBAL NON-METALLIC CARTRIDGE-CASE.

To all'wiwmz'tmizy concern:

Be it known that I, HANS ERNs'r, a subject of the Kin of Great Britain,residlng in the city of lton and State of Illinois, have invented newand useful Improvements in Integral Non Metallic Cartr1dge-Cases ,otwhich the following is a specificat on, reference being had to theaccompanying drawhis invention pertains to shot or cartridge cases, asordinarily used in shot-guns or other guns of small caliber, and has forits object the provision of a non-metallic one-piece cartridge caseconstructed or molded of papier mach, vulcamte, red fiber or, any othersimilar non-metallic composition..

Another object is to so construct such cases that there will be agradual tapering of the bore of the case from thefront to the base,whereby the base of the case and the wall immediately adjoining will bethicker than the balance of the case wall, thereby ofi'ering greater andsufiicient resistance to the explosive'force of the charge contained 1nthe case.

Another object is, by the said one-piece construction of said case, toproduce a case which will be cheap or economical in the manufacture andyet eflicient inuse.

With these objects in view, attention is called to the accompanyingdrawing where- Figure l is a longitudinal cross-section of my improvedcase;

Fig. 2 is afront end view; Fi 3 is a cross-section taken on the line A-in Fig. 1;

Fig. 4 is a rear end view;

Fig. 5 is a detail showing the method of 1 drawing or burring the rearface of the base of the case over the battery cup in order to hold thebattery on in permanent position. Fig. 6 is a modi cation showing aslight metal reinforcement around the base.

Fig. 7 is a sectional view illustrating the manner of molding thecartridge case.

Referring more particularly to the drawings, my invention consists informing,

pressing or molding the composition material, such as papier mach,vulcanite or the like non-metallic material into the form substantiallyrepresented in Fig. 1, so that the case body 1 will have a relativelythin frontal wall 2 and a relatively thick rear wall 3 Specification ofLetters Patent.

Application filed March 7,

Patented Jan. 11, 1921.

1919. Serial No. 281,239.

formed by the tapering of the bore l of the case from the forward to therear end. In this constructiona relatively thick base portion 5 is left,the same beingformed integral with the case body 1.. This base portion 5represents and takes the place of the ordinary bases. This base portion5 is formed with a port 6 to receive and frictionally engage the batterycup or primer 7. Into this port 6 the primer 7 is pressed andcountersunk slightly below the fa'ce S of the base portion 5 and anannular bur 9 is pressed down upon and around the outer edge of theprimer 7, thus locking it firmly in position.

The concave inner face of the base mer es into the interior taper of thebody and forms tapering connecting portions at the juncture of the bodyand the base. Also the integral bur at the outer end of the primer portby projecting over the outer end of the primer not only urges the primerin the port, but provides a suflicient amount of thenon-metallic-material at the outer faceof-the base to protect the primerwhen the cartridge case is arranged in an upright position upon asupporting surface.

Any slight changes or variations in the construction described may bemade without departing from the spirit of my invention as laid down inthe appended claim; for instance, the base portion 5 may be reinforcedwith a metal strip 10 in order to lessen the thickness of said baseportion.

What I claim to be new and patentable 1s:

An integral non-metallic cartridge case consisting of a hollow bodyformed solely of tough non-metallic material and having an interiortaper from front to rear, and a base integral with the body and providedwith a concave inner face merging into'the interior taper of the bodyand forming continuous unbroken tapering connecting portions at thejuncture of the base and the body, said base having a primer portenlarged at the outer end and provided thereat with an integral bur orportion overhanging the enlarged portion of the primer port and arrangedto retain a primer in the port and to form a cushion for protecting theouter end of the primer.

HANS ERNST.

Witnesses:

W. E. Bnssmcnn, EMIL Mrormmsocx.

